From: Megha Dey Subject: [PATCH 2/6] crypto: sha512-mb - Enable SHA512 multibuffer support Date: Mon, 27 Jun 2016 10:20:05 -0700 Message-ID: <1467048009-2826-3-git-send-email-megha.dey@intel.com> References: <1467048009-2826-1-git-send-email-megha.dey@intel.com> Cc: tim.c.chen@linux.intel.com, davem@davemloft.net, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, megha.dey@intel.com, fenghua.yu@intel.com, Megha Dey To: herbert@gondor.apana.org.au Return-path: In-Reply-To: <1467048009-2826-1-git-send-email-megha.dey@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org From: Megha Dey Add the config CRYPTO_SHA512_MB which will enable the computation using the SHA512 multi-buffer algorithm. Signed-off-by: Megha Dey Reviewed-by: Fenghua Yu Reviewed-by: Tim Chen --- crypto/Kconfig | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/crypto/Kconfig b/crypto/Kconfig index d8cc0f0..62fcbb9 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -720,6 +720,22 @@ config CRYPTO_SHA256_MB lanes remain unfilled, a flush operation will be initiated to process the crypto jobs, adding a slight latency. +config CRYPTO_SHA512_MB + tristate "SHA512 digest algorithm (x86_64 Multi-Buffer, Experimental)" + depends on X86 && 64BIT + select CRYPTO_SHA512 + select CRYPTO_HASH + select CRYPTO_MCRYPTD + help + SHA-512 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented + using multi-buffer technique. This algorithm computes on + multiple data lanes concurrently with SIMD instructions for + better throughput. It should not be enabled by default but + used when there is significant amount of work to keep the keep + the data lanes filled to get performance benefit. If the data + lanes remain unfilled, a flush operation will be initiated to + process the crypto jobs, adding a slight latency. + config CRYPTO_SHA256 tristate "SHA224 and SHA256 digest algorithm" select CRYPTO_HASH -- 1.9.1